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Proceedings Paper

Design of automatic leveling and centering system of theodolite
Author(s): Chun-tong Liu; Zhen-Xin He; Xian-xiang Huang; Ying Zhan
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Paper Abstract

To realize the theodolite automation and improve the azimuth Angle measurement instrument, the theodolite automatic leveling and centering system with the function of leveling error compensation is designed, which includes the system solution, key components selection, the mechanical structure of leveling and centering, and system software solution. The redesigned leveling feet are driven by the DC servo motor; and the electronic control center device is installed. Using high precision of tilt sensors as horizontal skew detection sensors ensures the effectiveness of the leveling error compensation. Aiming round mark center is located using digital image processing through surface array CCD; and leveling measurement precision can reach the pixel level, which makes the theodolite accurate centering possible. Finally, experiments are conducted using the automatic leveling and centering system of the theodolite. The results show the leveling and centering system can realize automatic operation with high centering accuracy of 0.04mm.The measurement precision of the orientation angle after leveling error compensation is improved, compared with that of in the traditional method. Automatic leveling and centering system of theodolite can satisfy the requirements of the measuring precision and its automation.

Paper Details

Date Published: 15 October 2012
PDF: 7 pages
Proc. SPIE 8415, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 84150S (15 October 2012); doi: 10.1117/12.974254
Show Author Affiliations
Chun-tong Liu, Xi'an Research Institute of High Technology (China)
Zhen-Xin He, Xi'an Research Institute of High Technology (China)
Xian-xiang Huang, Xi'an Research Institute of High Technology (China)
Ying Zhan, Xi'an Research Institute of High Technology (China)


Published in SPIE Proceedings Vol. 8415:
6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
Wenhan Jiang; Myung K. Cho; Fan Wu, Editor(s)

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